here's an image of the asteroid from nasa when it was more than 450,000 miles from earth. tom foreman has the details on how close it will get. >> let's get reference points. we talk about the earth many of us like to think the moon is close to us but the moon is not as close as you think. it's almost a quarter million miles away so what is close in space in satellites, we've been launching these for decades and filled the sky. some are fairly low, others quite high. the highest are communications and gps satellites, about 22,000 miles up in the air. where is this asteroid going to be? it is going to shoot out of the sky and cut right through the top of the satellite belt, at about 17,000 miles. >> an awful lot going on in the skies right now so we're joined by bill nye the science guy, is he in los angeles. bill, the meteor shower in russia, the ast noid some 17,000 miles away, i think everyone really has two questions here, first of all, is there a connection here and is there a difference between a meteor shower and an asteroid? help us out. >> oh, yeah, yeah, yeah. so